Best Harper Alternatives in 2026
Updated
20 tools from grammar checkers ranked against Harper on the same published basis.
- 1Harper vs LanguageTool
- 2Harper vs Sapling
- 3Harper vs iGrammar
- 4Harper vs Grammarly
- 5Harper vs Ginger
- 6Harper vs Trinka
- 7Harper vs Wordvice AI
- 8Harper vs Linguix
- 9Harper vs ProWritingAid
- 10Harper vs Scribens
- 11Harper vs Antidote
- 12Harper vs MerciApp
- 13Harper vs GemType
- 14Harper vs TextGears
- 15Harper vs Grammar Guru
- 17Harper vs WhiteSmoke
- 18Harper vs Outwrite
- 19Harper vs GrammarCheck.ai
- 20Harper vs Microsoft Editor
- 21Harper vs Rechtschreibprüfung24
Harper alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | LanguageTool | 8.9 | Free plan | Free | Browser, iOS, Mac, Windows |
| 2 | Sapling | 8.8 | Free plan | $5/mo | API, Browser, self-hosted, Web, Windows |
| 3 | iGrammar | 8.7 | Free plan | $10/mo | Android, API, Browser, iOS, Mac, Web |
| 4 | Grammarly | 8.6 | Free plan | $12/mo | Android, iOS |
| 5 | Ginger | 8.5 | No | $0.42/mo | Android, API, Browser, iOS, Mac, self-hosted, Web, Windows |
| 6 | Trinka | 8.5 | Free plan | — | API, Browser, Mac, self-hosted, Web, Windows |
| 7 | Wordvice AI | 8.5 | Free plan | $0.70/mo | Browser, Mac, Web, Windows |
| 8 | Linguix | 8.4 | Free plan | $5/mo | Android, API, Browser, iOS, Web |
| 9 | ProWritingAid | 8.3 | Free plan | $10/mo | Browser |
| 10 | Scribens | 8.2 | No | €4.99/mo | Web, Windows, Mac, iOS, Android |
| 11 | Antidote | 8.2 | No | €4/mo | Web, Windows, Mac, Linux, iOS, Android |
| 12 | MerciApp | 8.1 | Free plan | €12/mo | Web, Windows, Mac |
| 13 | GemType | 8.1 | Free plan | Free | Windows, Mac, Linux, Web |
| 14 | TextGears | 8.0 | Free plan | $2.48/mo | API, Web |
| 15 | Grammar Guru | 8.0 | Free plan | $1/mo | Windows, Mac, Linux |
| 17 | WhiteSmoke | 8.0 | No | $0.83/mo | Web, Windows, Mac, iOS, Android |
| 18 | Outwrite | 8.0 | Free plan | $7.95/mo | API, Browser, Mac, Web, Windows |
| 19 | GrammarCheck.ai | 7.9 | Free plan | $4/mo | Web, iOS, Android, Linux |
| 20 | Microsoft Editor | 7.7 | No | — | — |
| 21 | Rechtschreibprüfung24 | 7.6 | Free plan | — | Web |
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Questions about Harper alternatives
What is the best alternative to Harper?
LanguageTool, number 1 in grammar checkers with a score of 8.9 out of 10. The others here: Sapling, iGrammar, Grammarly and 16 more.
What is the best free alternative to Harper?
LanguageTool is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.